[FR] Model Selection

[TheMrCodes]

Feature Request:
Add a combo box for model selection into the settings.

Why combo box? So that the user can not only select predefined models like 'gpt-3.5-turbo' or 'gpt-4' but also specify it via text inout to use a specific version like 'gpt-4-0613'.

[FireCubeStudios]

The api library i use supports 3.5 and 4. I will be addign 4 as an option via toggle switch